The next installment in the series will welcome back Academy Award winner Jessica Lange. It was previously confirmed that the fourth season would be set in the 1950s.

Petrie previously stated that work had already begun on season four of "AHS." "It's gonna be awesome," he said, without specifically naming the title. When asked by the panelists if "carnival" would be the theme of the upcoming season, he replied, "Very roughly that's the idea."

The new season of "American Horror Story: Coven," set in New Orleans and featuring a host of Broadway actresses — including Patti LuPone, Christine Ebersole, Angela Bassett and Jessica Lange — premieres Oct. 9 at 10 PM on FX. Read the Playbill.com story.